Camshaft End Thread Design for Dual Hydraulic Adjuster Assembly
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Solution Overview
Problem
Existing camshaft adjuster technologies face challenges in simple assembly and correct installation, leading to potential incorrect assembly and complex disassembly due to differences in hydraulic camshaft adjusters, which can result in incorrect oil interfaces and functional issues.
Innovation Solution
A camshaft end with two distinct threads allows for the integration of both first and second hydraulic camshaft adjusters, using a central screw for one and a central valve screw for the other, along with an oil conduit system for axial guidance, ensuring flexibility and correct assembly by utilizing the same construction for different hydraulic camshaft adjusters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different constructions are used for first and second hydraulic camshaft adjusters, then each adjuster can be optimized for its specific function, but assembly becomes complex and incorrect installation may occur
Solution Approach 1:
The camshaft end is designed with a universal construction that can accommodate both the first and second hydraulic camshaft adjusters. Both adjusters use the same thread type (e.g., M10x1.5) and fastening mechanism, allowing them to be installed using identical assembly procedures. This universal design eliminates assembly complexity while maintaining functional optimization for each adjuster type.
2Reliability
If different thread types are used for first and second camshaft adjusters, then correct assembly can be ensured, but disassembly becomes complex and time-consuming
Solution Approach 1:
Both the first and second hydraulic camshaft adjusters utilize the same thread type (e.g., M10x1.5) and fastening mechanism on the camshaft end. This uniformity allows for quick and simple disassembly using the same tools and procedures for both adjusters, significantly reducing disassembly time while maintaining reliable and correct assembly through standardized interfaces.
3Ease of operation
If hydraulic camshaft adjusters are integrated into the drivetrain, then variable valve control is achieved, but incorrect oil interfaces may result from improper installation
Solution Approach 1:
The universal camshaft end construction with standardized threads and oil conduit arrangements ensures that both hydraulic camshaft adjusters are installed with correct oil interfaces. The consistent design eliminates the risk of incorrect oil interface connections that would occur with varying constructions, while maintaining the variable valve control functionality.
4Device complexity
If a unified camshaft end construction is used for both adjusters, then assembly is simplified, but functional differentiation may be compromised
Solution Approach 1:
While the overall camshaft end construction is unified and standardized for simplified assembly, local differences are maintained in the oil conduit arrangements and fastening configurations specific to each adjuster type. This allows the unified structure to provide assembly simplicity while local variations ensure functional differentiation and correct oil interface connections for each hydraulic camshaft adjuster.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables straightforward assembly of camshaft adjusters with specific functions on various camshafts, preventing incorrect installations and maintaining proper oil interfaces, thus simplifying the assembly process and avoiding functional complications.
Implementation Method 1
the driven element and the drive element form one or more pairs of mutually interacting pressure chambers that can be loaded with hydraulic medium. By filling and emptying individual pressure chambers, a relative movement between the drive element and the driven element is generated
Implementation Method 2
A spring arranged to provide a rotating effect between the drive element and the driven element forces the drive element relative to the driven element in a preferred direction
Data Source
AI summary
A camshaft adjusting device (1) is provided having a camshaft adjuster (2, 3) and a camshaft (4) characterized in that the camshaft (4) include a camshaft end (5) which is designed to receive a first hydraulically actuatable camshaft adjuster (2) as well to receive a second hydraulically actuatable camshaft adjuster (3).